I understand the advantages of having a unique scale for minis (captive audience), but I dislike the idea as a consumer, especially for largish scales. I was able to get a ton of 1:6000 Figurehead ships because they were cheap, but now my local (only 1500 miles) source is closed and I need to go across the pond for them. 1:1800 will likely be as or more expensive than 1:2400, and impossible to bring out all once. Thus, some players have to wait for their favorite class for some time. With existing scales, particularly 1:2400, there are options.
This means that (and I'm making some assumptions on relative price and detail here) people who want inexpensive fleets first and foremost can go with Panzerschiffe, those who want intermediate price and detail can go with Mongoose, and those who want detail above all alse can buy GHQ. There is also the opportunity to have lines fill in each others holes, for a more complete experience.
As a gamer, I'm more likely to buy in a scale with some degree of market saturation, both for the reasons stated above, and because competition means a higher quality end product for me. No competition leads to stagnation. Again, look at Figurehead. There are still holes in the range, but the sculptor quit doing them, and there has been no effort to continue the line, because there is no competator that might grab sales with a larger selection.
